Tractor



R. D. KOHNE.

TRACTOR.

APPLICATION FILED MAY 22, I9l8.

ranma 0t,19,1920.

Q y Mdm w/ M.

v 34. The extent of the thereof,but in so doing it compresses ionef fast on -shaft 31.

' UNITED STATES ROBERT D. K'oHNE, oir-TOLEDO, oHIo. TRACTOR.

Application filed May 22, 191s.

T0 all whom t may concern: i

Be it known thatI, ROBERT D. KoHNE, a citizen of the United States of America, residing at Toledo, Lucas county, Ohio,1have invented new and useful Tractors, of which the following is a specification.

his invention relates to vehicle adjustment and control.

This invention has porated in tractors, especially` of the threepoint support type, in rendering them more broadly adaptable to the varying conditions in farm work.

Referring to the drawings: '1 Figure 1 is a plan view, away, of an embodiment of the-inventionv in a tractor; and f ,Figa 2 is a section on theline IVI-II, Fig. i

VThe main frame may carry centrally" thereof the multiple cylinder internal combustion motor 2 ed by the clutch 4 for actuating pinion 5 for driving in one direction, and pinion 6for driving' in the opposite direction. These pinions 5, 6, are each in mesh with-bevel gear 7 carried axially of the turn table or drum 8 providing the traction or propelling support for the tractor. Fast. with the gear is gear 9 in mesh with pinion 10, on vertical shaft 11, having worm 12 in mesh with worm wheel 13, fast with gear 14. The gear 14 is in mesh with gears 15, 16, actuating the wheels carrying the apron 17. f

From the shaft 3 `extends gearing 18 for rotating shaft 19, having toward theidrum 8, a pair of pinions 20, 21. loosely mounted thereon7 with sliding splined sleeve 22 there-y between for Aselectively clutching said pinions in effecting driving of bevel gear 23 in mesh therewith, thereby permitting steering of the tractor through rvthe propelling support, for-the gear 23 drives shaft 24 having worm 25 in mesh with the worm wheel teeth 26 on the drum 8. Y

The shaft 19 in its extent along thefframe 1 away from -thedrum 8 carries loose bevel pinions 27, 23, selectively connectedfby for driving bevel gear 30 The shaft 31 has a .central threadedportion 32 `coacting witha nut 33 mounted against rotation thereon, but vin its travel along shaft'31`, moving the arm threaded portion' 32 33 soontravels free splined sleeve 29 is such that the nut or ythe other of helical springs 35 held in' Specification of Letters Patent.

utility when incorg with parts broken having its shaft 3 connect-' Y pin 41, the frame 1 in such adjustment,

v the same in each instance, due to PATENT QFFICE. p

Patented Oct.v 19,1920. seriai no. 235,918. c

position bycollars 36. `Vt/hen the knut 33 rides free of the threaded portion 32, no'

Ifurther travel'of the nut 33 occurs, but this is an automatic disconnection from power actuation; while immediately upon reversal of the power actuation, throughconnecting c the other bevel pinion for driving the gearV Vportion 32 for reverse Vactuation of the nut 33.

` j The arm 34 whichV may be shifted by the nut L33, has a fixed fulcrum bearing 37 from which it swings to have its -free end throw a linke-38 terminally pivotally connected to arms 39 extending to plates 40 loosely mounted.` about caster pins 41.' Each` of these two pins 41 has fixed to its lower portion a plate 42 from which extend bracket portions .43 mounting a pair. of .caster wheels 44. Radially extending crowned flutings'or corrugations 45 on the underside of arm carrying plate 40, interit with similar flutings or corrugations 46 on the u er side of plate 42. By loosening bolt 46 and set screw 47 mounting a collar 48 fast on the may be lifted to permit relative angular adjustment or shifting of the caster wheel carrying plate 42 to the steering 'arm carrying plate 40. The slots permit the bolt 46 to be set for any angle of adjustment between these plates, then drawing up of the bolt precludes any change by holding the vcorrugations in mesh. This isa feature of especial utility in plowing with one caster wheel 44 in the plow furrow. thus making the tractor self-steering, for the caster wheel may be set foralining with the furrow and the furrowwill tend to keep it from climbing out.

VRegardless of whether the casters or drum be leading, the drum apron and one caster wheel may line upto take a common row with the other caster laterally in a different row. To meet such a travel condition, the

tractor may have a simple control of mean effectk approximating that of travel atk right angles to the line connecting the casters, for the mean direction ofthe arms 39 may be adjustment between the plates 40,42. With the frame load brought 'down on the adjusted plate/42,1`

the angular position of the pin 41 as to the plate 40 is locked by the'corrugations 45,

`46, bolt 46 cooperating, and thecollar 48 brought down against the frame l may again be ylocked bythe set screw 47.

l 40,' aswell as` with position,

f drum 8. p travel, all three steerable supports may be A further unusual condition may be readinvention herein, and this is the maintenance of the frame 1 level in working over ground,

plow in yposition with travel of one support in the furrow. With the apron or propelling support and one of the caster wheels traveling out of the fur-V row, the second caster wheel may travel in the furrow and the frame-be leveled up by looseningr the collarviS and inserting one or two pairs of half ring sections 49 'on the plate ll() to coact with a seat 50 of the fifth wheel bearing'onthe upper side of the plate aV seat 51 side of theframe l.y lVhen ringse'ctions 49 are used for each caster, in the leveling up, the sections may be takenfrom onefand used to supplement those in the other. f. Y y

The operators seat 52 is removable from socket frame l and insertible inra socket 5i at the vpropelling support endv of the three- `point supportegdtractor frame l. lnksulch change of position, hand lever 55 for controlling-the clutch lV is removable for socket insertion adjacent the changed seat. Like- 56 positioning the wise removable handle clutch sleeve 29 as inactive or for steering the caster wheels 44 in either direction,may be yplaced with the seat 52 at 'its different with analogous change of coper ative relation for the removable h'and'lever 57 adapted for controlling the sleeve 22 from neutral tov either direction of steering,v the Accordingly at either Vdirection of controlled similarly,l oppositely and inde' pendently. Y

lVhat is claimed and it is desired to secure by Letters Patent is:

flare seats, -supporting means for the frame including a pair of caster wheels,

. brackets for the wheels 'having' flare heads coacting with the seats, and means for adf justing the caster wheels permitting maintaining the Vframe level in operating the tractorovernuneven ground and comprisingmeansfor va- 2 rying'the spacing of the heads vand, seats-LV '2. A tractor including aframahaving able in a furrow, a second frame supporting caster wheel operable above the furrow, brackets for the wheels having angular adjustment 'anchoring means. coacting with the frame seats,"and-means for'leveliiig the 'frame as to the wheels vincluding removable .means for varying the spacing of thebrackets from the seats;

, operating arms for ily taken Careof within the utility of the 4. Aftractor includingV a vframe, an arm for each away from the load carrying larm as to the wheel for Vfor steering operation of the wheels at iii the vlower f `5.' A tractor including Y able caster wheel mounted in said frame, an operating arm 53 at theY caster wheel endV 'of theeach collar and Y Vbeing ofan v v 'Y bythe compression spring l1. A tractor including a frame havingy 'able caster wheels,

'having l a threaded portion,

effective caster length ofthe withthe threaded of which v atraveling apron, Ameans simultaneously controlling the steering ofthe wheels as to the frame, and means for adjusting the arms to vdifferent angles Vas'to the wheels and frame for determining differentfmean straight line directions for tractor travel. Y

frame, supporting wheels therefor, a bracket a pair of load carrying for each wheel and connected to the wheel extending bracket, and angularly shifting the setting to position adjusting means for maximum leverage with the tractorframe travel general direction at different angles to the line connecting saidwheels.

Vforthe wheel and coacting with the frame, and means for adjusting the angular position of the arm as tol'the wheel and frame "for 'locating a the arm in straight lin'e travel of the frame in various directions as to the frame. 6. A Vtractor including steerable wheels,

a frame, a steer" mean position for and actuating mechanism for steeringfthel Y wheels including anV arm extending from ,eachwheeklink means connecting the arms,

a longitudinally fixed -rotatableactuating shaft havin'ga threaded portion, a collar on each siderof said threaded portion, a .com-

pression-spring about said,V shaft' between'4 nut Von the threadedV portion V'and coacting with the link means byrshaft actuation, said threaded portion cramping ofthe wheels inV steering by allowing the nutto run-off thereofysaid nut `being at once'reset for opposite actuation of the wheels upon reverse travel of the shaft forcingY the nut back upon 'the threaded portion.

` and means for causing the nut to return 8. "A tractor,'three support therefor,V4 one .for

Y anda motor for the tractor disposed on a in steering the wheels line from the' the threaded portion,anda I 'extent precluding excessive travel, `rangeV off said y VVtoV thejthreaded portion y upon .reversal of shaft rotation. seats, a frame supporting caster wheeloper- V adjusting `:two of said supports,"for,l deter- `mining the general directionlof the tractor Vvtravel and operatingv the Vvthird apronrsupportY for steering the tractor,

third support bisectingthe line between thev Y other two supports.

witness whereofy I affiii y signature; ROBERT D. n' O HNE. 

